| 摘要 |
PURPOSE:To generate a power supply alarm in matching with the operation of a radio equipment, by changing a voltage value to be used as the reference for alarm generation in accordance with a condition where the radio equipment is in a stanby state or talking state. CONSTITUTION:The operating condition of a radio equipment 1 is discriminated by means of a discriminating circuit 7 and, when the equipment 1 is in a standby condition, a switch 6 is switched to an identifying section 4 side by means of the ouput of the discriminating circuit 7. When the voltage of a battery 2 drops to a value lower than a prescribed value V1, an output is sent from the section 4 to a power supply alarm generating section 3, and an larm is generated. When the radio equipment 1 is in a talking state, the switch 6 is switched to another identifying section 5 side by means of the output of the discriminating circuit 7. When the voltage of the battery 2 drops to a value lower than another prescribed value V2, an output is sent form the section 5 to the alarm generating section 3 and an alarm is generated. |
